YG-1 DH408 Carbide Micro Drill Bit - TiAlN Coated, Straight Shank, Slow Spiral, 140° Point Angle, 3.7mm x 66mm (1-Pack) - Perfect for Precision Metalworking, Jewelry Making & PCB Drilling

Product Description

Long length dream drill bits without coolant holes. Right hand spiral, 30 degree helix. 140 Degree point angle. Made of carbide. Shank tolerance ød2: -0.0001/-0.0005. 5xD. TiAlN-coated. Application for drilling into steel in general, cast steel, cast iron, chilled cast iron, malleable cast iron, non-ferrous heavy metal, non-ferrous light metal, abrasive plastic. Advantage: Self centering (center drilling is not required); Excellent positioning (bush is not necessary) and Special Design (reaming is not required, good chip removal, powerful drilling).